<template>
  <el-container class="home-container">
    <el-header>
      <div>
        <img src="../assets/heima.png" />
        <span>电商管理系统</span>
      </div>
      <el-button type="info" @click="logout">退出</el-button>
    </el-header>
    <el-container>
      <el-aside :width="isCollapse ? '64px' : '200px'">
        <div class="toggle-button" @click="toggleCollapse">|||</div>
        <el-menu background-color="#333744" text-color="#fff" active-text-color="#409eff" 
        :unique-opened="true" :collapse="isCollapse" :collapse-transition="false"
        :router="true" :default-active="activePath">
          <el-submenu :index="item.id + ''" v-for="item in menuList" :key="item.id">
            <template slot="title">
              <i :class="iconsObj[item.id]"></i>
              <span>{{item.authName}}</span>
            </template>
            <el-menu-item  :index="'/' + subItem.path + ''" v-for="subItem in item.children"
             :key="subItem.id" @click="saveNavState('/' + subItem.path)">
              <template slot="title">
                <i class="el-icon-menu"></i>
                <span>{{subItem.authName}}</span>
              </template>
            </el-menu-item>
          </el-submenu>
        </el-menu>
      </el-aside>
      <el-main>
        <router-view></router-view>
      </el-main>
    </el-container>
  </el-container>
</template>
<script>
export default {
  data() {
    return {
      menuList: [],
      iconsObj : {
        '125' : 'iconfont icon-users',
        '103' : 'iconfont icon-tijikongjian',
        '101' : 'iconfont icon-shangpin',
        '102' : 'iconfont icon-danju',
        '145' : 'iconfont icon-baobiao'
      },
      isCollapse : false,
      activePath : ''
    };
  },
  created() {
    this.activePath = window.sessionStorage.getItem('activePath');
    this.getMenuList();
  },
  methods: {
    async getMenuList() {
      const { data: res } = await this.$http.get("menus");
      if (res.meta.status !== 200) {
        return this.$message.error(res.meta.msg);
      }
      this.menuList = res.data;
    },
    logout() {
      window.sessionStorage.clear();
      this.$router.push("/login");
    },
    toggleCollapse(){
      this.isCollapse = ! this.isCollapse;
    },
    saveNavState(activePath){
      window.sessionStorage.setItem('activePath',activePath);
      this.activePath = activePath;
    }
  }
};
</script>
<style lang="less" scoped>
.el-header {
  background-color: #373d41;
  display: flex;
  justify-content: space-between;
  padding-left: 0px;
  align-items: center;
  color: #fff;
  font-size: 20px;
  > div {
    display: flex;
    align-items: center;
    margin-left: 15px;
  }
}
.el-aside {
  .el-menu {
    border-right: none;
  }
  background-color: #333744;
}
.el-main {
  background-color: #eaedf1;
}
.home-container {
  height: 100%;
}
.iconfont {
  margin-right: 10px;
}
.toggle-button {
  background-color: #4a5064;
  font-size: 10px;
  line-height: 24px;
  color: #fff;
  text-align: center;
  letter-spacing: 0.2em;
  cursor: pointer;
}
</style>